Rotary engine.



Nn. 659,782. Patented out. I6, |900.

J.l P. BAXTER. noTAhY ENGINE.

(Application led Oct. 28, 1899.) (No Model.) 2 Sheets-Sheet l.

un Il WiWi-Erin!! No. 659,782.V Patented not. le, |900.

.1. P. BAXTER.

RUTARY E-NGINE.

(Application led Oct. 98, 1899.)

2 Sheets-Sheet 2.

(No Modal.)

@VH1/mow@ n4: Novus PETERS ce. Pnomuwo.. wunwcrou. n. c.

tran STATES 'Aralar OFFICE.

JAMES I). BAXTER, OF MILLSAP, TEXAS, ASSIGNOR OF ONE-HALF TO HARVEY H. DICK, OF SAME PLACE.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 659,782, dated October 16, 1900` Application led October 28, 1899. Serial No. 735,057. (N model-J T0 all whoml it may concern: parts wherever they appear in the several Be it known that I, JAMES P. BAXTER, a igures of the drawings. citizen of the United States, residing at Mill- Referring to the drawings by numerals, 1l

sap, in the county of Parker and State of indicates the base upon which the cylinder 55 5 TeX-as, have invented a new and useful Ro- 12.is formed and supported, said cylinder betary Engine, of which the following is a speciing slightly elliptical, with the shortest diiication. ameter vertical and its longest horizontal.

This invention relates to rotary engines or 13 indicates the rotary piston, which is motors to be driven by steam, gas, or tluidformed in four sector-shaped sections 14, 15, 6o lo pressure of any suitable kind, the object of 1G, and 17, secured to a shaft 18 at proper the invention being to generally improve and distances apart to leave slideways 19, 20, 21, simplify the construction and operation of and 22 to receive piston-blades 23 and 24, said engines of this class. slideways extending diametricalljT through With this object in view the invention conthe piston at right angles to each other. 65 15 sists in improvements in the details of con- When the piston-head has its shaft (which is struction and combination and arrangement journaled in the cylinder-heads) projecting of parts, as will be fully described hereinafon one side only, said piston is constructed, ter and afterward specifically pointed out in as best shown in Fig. 3, of a single set of such the appended claims. sections 14, 15, 16, and 17; but when the Shaft 7o zo In order that others skilled in the art to is to project in both directions the piston is which my invention most nearly appertains formed of two sets of such sector-shaped secmay be enabled to make and use the same, I tions, the second set facing the first, as shown will now proceed to describe its construction best in Fig. 8, the open ends facing each other,

and operation, reference being had to the acand the opposite sections secured together, as 75 companying drawings, forming part hereof, seen in Figs. 8 and 9, by countersunk bolts i in whichor rivets 25. The blades 23 and 24 cross each Figure 1 is a view in end elevation of an other, and to permit of this and of their slidengine constructed in accordance with my ining one upon the other they are oppositely vention, the cylinder-head being removed to recessed at 26 and 27. 8o

3o expose the interior construction. Fig. 2 is a The piston and shaft are eccentrically jourvertical sectional view on the planes indicated naled in the cylinder in the line of the verby the broken lines 22 of Fig. 1 looking in tical or shortest diameter of the cylinder and the direction of the arrows. Fig. 3 is a detail above its mid-length andthe blades 23 and 24, perspective view of the rotary piston and which are of the length of the vertical diam- 85 shaft as constructed when the shaft projects eter of the cylinder and are provided with from the piston on one side only. Fig. 4 is a packing-strips 28 in grooves 29, the strips beview in elevation of one of the blades deing held normally in steam-tight contact with tached. Fig. 5 is a sectional View of the other the inner periphery of the cylinder by springs blade. Fig. 6 isa partial end elevation of 30 and in similar contact with the cylinder- 9o 4o the rotary piston, the outer portions being heads by springs 31. The piston ends are broken away. Fig. 7 is a detail sectional seated in recesses formed in the cylinderview of the same on the plane indicated by heads, as'shown at 32 and 33 in Fig. 2. the broken lines 7 7 of Fig. 6. Fig. 8 is a de- 34 indicates the exhaust-port at the bottom tail perspective view of the rotary piston and of the cylinder, from which a channel 35 95 shafts when constructed with the shafts proleads outward through the base. There are jecting on both sides of the piston. Fig. 9 is two steam-inlet ports 36 37, one to the left a detail sectional view on a plane cutting raand the other to the right of the center of dially into the rotary piston. Fig. 10 is a top the top of the cylinder. A steam-tight joint plan View of the reversing-valve lever and its is made between the cylinder and the upper loo 5o guide-bar. face of the piston by means of a packing- Like numerals of reference mark the same strip 38, located in a groove in the cylindershell and normally held outward in said groove by springs 39.

40 indicates the steam-pipe, provided with a throttle-valve 4l and leading to a three-way valve 42 at the junction with branch pipes 43 and 44, leading, respectively, to the inletports 36 and 37. The valve 42 is provided with an operating-lever 45, which may be held at any adjustment by a clamp-screw 46, passing through a curved slot 47 in a curved bar 48, secured by standards 49 to the top of the cylinder. By turning the valve 42 steam may be admitted to either of the inlet-ports, according to the direction the engine is to be driven. The steam enters either of the spaces 50 or 5l in the cylinder above the blade, which may be in advance of the ports and forces that blade around until its forward end reaches the exhaust-port, when the steam will be exhausted. Before this takes place the other blade has passed the inlet-port and is being forced around. As the blades rotate they slide in the rotary piston, both ends of the blades always contacting With'the cylinder on account of the elliptic shape. The steam-receiving chambers are continually expanding in size until the exhaust takes place, thus offering the least possible resistance to the movement of the blades.

The engine is non-reacting, reversible, and smooth-running.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a rotary engine, the combination, with a cylinder, the head of which is perforated above the center and recessed/upon its inner face, concentrically to said perforation, of a shaft projecting through saidfperforation and provided upon its inner endl with a series of sector-shaped sections forming a substantially cup-shaped piston, the sections being at a distance apart and the inner end of the shaft being provided with intersecting grooves to register with the spaces between the sections, reciprocatory blades between the sections and in said grooves, and inlet and exhaust ports in the cylinder. l

2. In a rotary engine, the combination, with a cylinder, each head of which is perforated above the center and is recessed upon its inner face concentrically with said perforation, a shaft projecting through each perforation,and provided upon its inner end with a series of sector-shaped sections forming a substantially cup-shaped piston, the sections being at a distance from each other and the inner end of the shaft being provided with intersecting grooves to register with the spaces between the sections, and the sections upon the two shafts being locatedfopposite to each other, bolts `through the opposite sections, reciprocating blades in the'spaces between the sections, and inlet and exhaust ports in the cylinder. l

JAMEsl r. BAXTER.

Witnesses:

N. B. HANEY, j WM. HARRISON. 

